US998813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dam as closure for collecting-basins constructed in a filterlike manner of loose small rock.
Assignee: Individual
•
Filing: 1911-04-26
•
Granted: 1911-07-25
•
Expires: 1931-04-26
Abstract
No abstract record available.
Inventors
- 👤 Willy Todt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:31
CPC Classifications
E; E02; E02B; E02B7/00; E02B7/02; E02B7/04; E02B7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1914-07-24 | 1915-01-23 | 1915-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-07-24 | 1919-01-23 | 1919-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-07-24 | 1923-01-23 | 1923-07-25 | $7700.00 | Window Closed / Lapsed |